Patents by Inventor Hyokyung Lee
Hyokyung Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20170342884Abstract: An exhaust system according to an exemplary embodiment of the present invention includes a nitrogen oxide storing catalytic collector connected to an exhaust line and collecting a nitrogen oxide included an exhaust gas in a first temperature or less; a first selective catalytic reducer disposed at a rear portion of the nitrogen oxide storing catalytic collector and reducing a nitrogen oxide included in the exhaust gas; and a first urea injector disposed at the front side of the nitrogen oxide storing catalytic collector and supplying a urea solution when a temperature of the nitrogen oxide exceeds the first temperature.Type: ApplicationFiled: November 23, 2016Publication date: November 30, 2017Inventors: Hyokyung LEE, Chang Hwan KIM
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Patent number: 9468889Abstract: An exhaust gas treatment system includes an exhaust line through which exhaust gas flows. A nitrogen oxide purification catalyst is disposed at one side of the exhaust line to reduce the nitrogen oxide. A diesel particulate filter is disposed at a downstream side of the nitrogen oxide purification catalyst, filters a particulate material, and eliminates the material in a set condition, wherein a set amount of oxygen storage material is included in the diesel particulate filter.Type: GrantFiled: July 14, 2014Date of Patent: October 18, 2016Assignee: Hyundai Motor CompanyInventors: Sungmu Choi, Hyokyung Lee
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Publication number: 20150224491Abstract: A catalyst carrier for purification of exhaust gas, may include a substrate having a plurality of cell paths partitioned by a cell barrier rib and a ceramic coating layer positioned on the inside surface of the cell path, where the ceramic coating layer has a porous lamellar structure arranged in an exhaust gas flow direction, and a method for preparing the same.Type: ApplicationFiled: September 12, 2014Publication date: August 13, 2015Applicants: Hyundai Motor Company, Kia Motors Corporation, Chung-Ang University Industry Academic Cooperation FoundationInventors: Hyokyung LEE, Jin Woo CHOUNG, Jonghwi LEE, Byoung Soo KIM
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Publication number: 20150017069Abstract: An exhaust gas treatment system includes an exhaust line through which exhaust gas flows. A nitrogen oxide purification catalyst is disposed at one side of the exhaust line to reduce the nitrogen oxide. A diesel particulate filter is disposed at a downstream side of the nitrogen oxide purification catalyst, filters a particulate material, and eliminates the material in a set condition, wherein a set amount of oxygen storage material is included in the diesel particulate filter.Type: ApplicationFiled: July 14, 2014Publication date: January 15, 2015Inventors: Sungmu CHOI, Hyokyung LEE
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Patent number: 8528321Abstract: An exhaust purification system for an internal combustion engine, and a desulfurization method for the same, recovers purification performance of a denitrification catalyst by removing sulfur poisoned at the denitrification catalyst in an exhaust system.Type: GrantFiled: July 30, 2010Date of Patent: September 10, 2013Assignee: Hyundai Motor CompanyInventors: Jin Ha Lee, Jin Woo Park, Hyokyung Lee, Sang-Min Lee, Jun Sung Park
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Patent number: 8414836Abstract: An exhaust system may include an exhaust line through which exhaust gas that is formed in an engine is exhausted, a nitrogen oxide purification catalyst that is disposed on the exhaust line to reduce nitrogen oxide that is included in the exhaust gas, an injector to additionally inject fuel into the exhaust line or a cylinder, and a fuel cracking catalyst that is disposed between the injector and the nitrogen oxide purification catalyst to crack the fuel that is injected through the injector, to transform the injected fuel into a high efficiency reducing agent, and to raise the temperature of the latter part thereof through an oxidation reaction.Type: GrantFiled: November 18, 2009Date of Patent: April 9, 2013Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Jin Ha Lee, Hyokyung Lee, Jie Won Park
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Patent number: 8375704Abstract: An exhaust system may include an exhaust line through which a combusted exhaust gas is exhausted outside, a nitrogen oxide purification catalyst that is mounted on the exhaust line and uses unburned fuel or hydrocarbon to reduce one part of the nitrogen oxide in the exhaust gas and diffuse the other part thereof to store therein, an injector that injects fuel into the exhaust line, a fuel cracking catalyst that is disposed between the injector and the nitrogen oxide purification catalyst to activate the additionally injected fuel from the injector through thermal decomposition so as to generate a reducing agent of high reactivity, and a control portion that controls the injector to additionally inject fuel in a predetermined condition such that the nitrogen oxide purification catalyst uses the activated reducing agent to detach and reduce the nitrogen oxide that is stored therein.Type: GrantFiled: October 22, 2009Date of Patent: February 19, 2013Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Jin Ha Lee, Jin Woo Park, Hyokyung Lee, Sangmin Lee, Jun Sung Park
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Publication number: 20120135859Abstract: A catalyst for purifying exhaust gas in vehicles may include a precious metal and porous structures that serve as a supporting material for the precious metal. The porous structures are comprised of a plurality of channels which are connected with each other by a plurality of bridges. The channels may have multiple entrances that allow reactants to pass through and react with the precious metal.Type: ApplicationFiled: July 22, 2011Publication date: May 31, 2012Applicant: Hyundai Motor CompanyInventor: Hyokyung LEE
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Patent number: 8178469Abstract: A catalyst for purifying exhaust gas in vehicles may include a precious metal and porous structures that serve as a supporting material for the precious metal. The porous structures are comprised of a plurality of channels which are connected with each other by a plurality of bridges. The channels may have multiple entrances that allow reactants to pass through and react with the precious metal.Type: GrantFiled: July 22, 2011Date of Patent: May 15, 2012Assignee: Hyundai Motor CompanyInventor: Hyokyung Lee
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Patent number: 8128880Abstract: An NOx reduction catalyst and an exhaust system using the same may include an NOx reduction catalyst mounted at an exhaust pipe through which exhaust gas passes, wherein the NOx reduction catalyst includes first and second catalyst layers coated on a carrier, the first catalyst layer being disposed close to the exhaust gas, and the second catalyst layer being disposed close to the carrier, wherein a portion of nitrogen oxide contained in the exhaust gas is oxidized while passing through the first catalyst layer, and the oxidized nitrogen oxide is stored in the second catalyst layer, wherein the nitrogen oxide stored in the second catalyst layer is released through a substitution reaction with an additionally injected fuel, and wherein the released nitrogen oxide is reduced by the additionally injected fuel in the first catalyst layer.Type: GrantFiled: October 22, 2009Date of Patent: March 6, 2012Assignee: Hyundai Motor CompanyInventors: Jin Ha Lee, Hyokyung Lee, Sangmin Lee, Jun Sung Park
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Publication number: 20110126513Abstract: An exhaust purification system for an internal combustion engine, and a desulfurization method for the same, recovers purification performance of a denitrification catalyst by removing sulfur poisoned at the denitrification catalyst in an exhaust system.Type: ApplicationFiled: July 30, 2010Publication date: June 2, 2011Applicant: HYUNDAI MOTOR COMPANYInventors: Jin Ha LEE, Jin Woo Park, Hyokyung Lee, Sang-Min Lee, Jun Sung Park
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Publication number: 20110047983Abstract: An exhaust system may include an exhaust line through which exhaust gas that is formed in an engine is exhausted, a nitrogen oxide purification catalyst that is disposed on the exhaust line to reduce nitrogen oxide that is included in the exhaust gas, an injector to additionally inject fuel into the exhaust line or a cylinder, and a fuel cracking catalyst that is disposed between the injector and the nitrogen oxide purification catalyst to crack the fuel that is injected through the injector, to transform the injected fuel into a high efficiency reducing agent, and to raise the temperature of the latter part thereof through an oxidation reaction.Type: ApplicationFiled: November 18, 2009Publication date: March 3, 2011Applicants: Hyundai Motor Company, Kia Motors CorporationInventors: Jin Ha LEE, Hyokyung LEE, Jie Won PARK
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Publication number: 20110023464Abstract: An exhaust system may include an exhaust line through which a combusted exhaust gas is exhausted outside, a nitrogen oxide purification catalyst that is mounted on the exhaust line and uses unburned fuel or hydrocarbon to reduce one part of the nitrogen oxide in the exhaust gas and diffuse the other part thereof to store therein, an injector that injects fuel into the exhaust line, a fuel cracking catalyst that is disposed between the injector and the nitrogen oxide purification catalyst to activate the additionally injected fuel from the injector through thermal decomposition so as to generate a reducing agent of high reactivity, and a control portion that controls the injector to additionally inject fuel in a predetermined condition such that the nitrogen oxide purification catalyst uses the activated reducing agent to detach and reduce the nitrogen oxide that is stored therein.Type: ApplicationFiled: October 22, 2009Publication date: February 3, 2011Applicants: Hyundai Motor Company, Kia Motors CorporationInventors: Jin Ha LEE, Jin Woo Park, Hyokyung Lee, Sangmin Lee, Jun Sung Park
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Publication number: 20100223919Abstract: An NOx reduction catalyst and an exhaust system using the same may include an NOx reduction catalyst mounted at an exhaust pipe through which exhaust gas passes, wherein the NOx reduction catalyst includes first and second catalyst layers coated on a carrier, the first catalyst layer being disposed close to the exhaust gas, and the second catalyst layer being disposed close to the carrier, wherein a portion of nitrogen oxide contained in the exhaust gas is oxidized while passing through the first catalyst layer, and the oxidized nitrogen oxide is stored in the second catalyst layer, wherein the nitrogen oxide stored in the second catalyst layer is released through a substitution reaction with an additionally injected fuel, and wherein the released nitrogen oxide is reduced by the additionally injected fuel in the first catalyst layer.Type: ApplicationFiled: October 22, 2009Publication date: September 9, 2010Applicant: Hyundai Motor CompanyInventors: Jin Ha LEE, Hyokyung LEE, Sangmin LEE, Jun Sung PARK